#1977F7
Closest named color: Clear Blue (#247AFD). oklch(59.3% 0.209 258.5), rgb(25, 119, 247).
Aa
Black text reads best on this color (5.02:1).
About this color
#1977F7 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.209 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.013 away. Black text reads best on it, at 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.209) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.02:1 |
| White text | 4.18:1 |
Values
| HEX | #1977F7 |
| RGB | rgb(25, 119, 247) |
| HSL | hsl(215, 93%, 53%) |
| OKLCH | oklch(59.3% 0.209 258.5) |
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 #1977F7 | 4.18:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #1977F7 | 5.02:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #1977F7 text on white | 4.18:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #1977F7 text on black | 5.02:1 | AA | Lc -33.6 | 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 600.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DBFC
oklch(88.6% 0.051 258.4)
-
Step 300
300
#9BC2FE
oklch(80.8% 0.095 258.8)
-
Step 400
400
#63A0FD
oklch(70.6% 0.151 258.6)
-
Step 500
500
#3585FB
oklch(63.1% 0.193 258.5)
-
Step 600
600 (this color)
#1977F7
oklch(59.3% 0.209 258.5)
-
Step 700
700
#0059C7
oklch(49% 0.186 258.6)
-
Step 800
800
#0149A5
oklch(42.8% 0.161 258.6)
-
Step 900
900
#0E3E82
oklch(37.6% 0.125 258.5)
-
Step 950
950
#0B254C
oklch(27% 0.079 258.6)
#1977F7 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) | #1086FC | 0.038 |
| Deuteranopia (no green cones) | #0073F5 | 0.013 |
| Tritanopia (no blue cones) | #0097AC | 0.158 |
| Achromatopsia (no color) | #7C7C7C | 0.209 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1977F7
#1977F7
oklch(59.3% 0.209 258.5)
- #A57300
#A57300
oklch(59.2% 0.123 78.4)
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 #1977F7, closest first.
No curated palette has a color within ΔE 0.04 of #1977F7.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.013
- Cerulean Blue #056EEE ΔE 0.028
- Bright Blue #0165FC ΔE 0.046
- Royal Blue #4169E1 ΔE 0.048
- Neon Blue #4361EE ΔE 0.054
- Azul #1D5DEC ΔE 0.064
- Dodger Blue #1E90FF ΔE 0.065
- Cornflower #6A79F7 ΔE 0.069
Use #1977F7 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.