#1C7EF9
Closest named color: Clear Blue (#247AFD). oklch(60.9% 0.203 257.3), rgb(28, 126, 249).
Aa
Black text reads best on this color (5.40:1).
About this color
#1C7EF9 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.203 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.012 away. Black text reads best on it, at 5.40:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.203) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.40:1 |
| White text | 3.88:1 |
Values
| HEX | #1C7EF9 |
| RGB | rgb(28, 126, 249) |
| HSL | hsl(213, 95%, 54%) |
| OKLCH | oklch(60.9% 0.203 257.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #1C7EF9 | 3.88:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #1C7EF9 | 5.40:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #1C7EF9 text on white | 3.88:1 | AA large text | Lc 65.6 | Content text, not long reading |
| #1C7EF9 text on black | 5.40:1 | AA | Lc -36.0 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFE
oklch(88.5% 0.055 257.7)
-
Step 300
300
#99C3FF
oklch(80.9% 0.097 257.3)
-
Step 400
400
#5EA1FF
oklch(70.7% 0.154 257.1)
-
Step 500
500 (this color)
#1C7EF9
oklch(60.9% 0.203 257.3)
-
Step 600
600
#006DE4
oklch(55.5% 0.199 257.3)
-
Step 700
700
#005BC2
oklch(49% 0.177 257.5)
-
Step 800
800
#004BA0
oklch(42.8% 0.152 257.1)
-
Step 900
900
#033E86
oklch(37.7% 0.133 257.4)
-
Step 950
950
#06254E
oklch(26.9% 0.084 257.1)
#1C7EF9 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2E8BFD | 0.036 |
| Deuteranopia (no green cones) | #0078F7 | 0.018 |
| Tritanopia (no blue cones) | #009CB0 | 0.153 |
| Achromatopsia (no color) | #818181 | 0.203 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C7EF9
#1C7EF9
oklch(60.9% 0.203 257.3)
- #AD7700
#AD7700
oklch(60.9% 0.127 77.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #1C7EF9, closest first.
No curated palette has a color within ΔE 0.04 of #1C7EF9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.012
- Cerulean Blue #056EEE ΔE 0.045
- Dodger Blue #1E90FF ΔE 0.047
- Royal Blue #4169E1 ΔE 0.060
- Bright Blue #0165FC ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.063
- Cornflower #6A79F7 ΔE 0.064
- Soft Blue #6488EA ΔE 0.069
Use #1C7EF9 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.