#1279F0
Closest named color: Clear Blue (#247AFD). oklch(59.1% 0.199 256.7), rgb(18, 121, 240).
Aa
Black text reads best on this color (5.01:1).
About this color
#1279F0 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.199 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.021 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.199) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #1279F0 |
| RGB | rgb(18, 121, 240) |
| HSL | hsl(212, 88%, 51%) |
| OKLCH | oklch(59.1% 0.199 256.7) |
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 #1279F0 | 4.18:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #1279F0 | 5.01:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #1279F0 text on white | 4.18:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #1279F0 text on black | 5.01:1 | 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
#DFEBFC
oklch(93.6% 0.026 257)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9BC3FA
oklch(80.8% 0.089 256.5)
-
Step 400
400
#63A2F8
oklch(70.8% 0.143 256.6)
-
Step 500
500
#3387F5
oklch(63.1% 0.183 256.8)
-
Step 600
600 (this color)
#1279F0
oklch(59.1% 0.199 256.7)
-
Step 700
700
#005CBF
oklch(49% 0.172 256.8)
-
Step 800
800
#004B9E
oklch(42.6% 0.15 256.7)
-
Step 900
900
#0C407F
oklch(37.8% 0.119 256.4)
-
Step 950
950
#0A264A
oklch(27% 0.075 256.3)
#1279F0 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) | #2B86F4 | 0.037 |
| Deuteranopia (no green cones) | #0073EE | 0.017 |
| Tritanopia (no blue cones) | #0096A9 | 0.149 |
| Achromatopsia (no color) | #7C7C7C | 0.199 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1279F0
#1279F0
oklch(59.1% 0.199 256.7)
- #A67200
#A67200
oklch(59.1% 0.124 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 #1279F0, closest first.
No curated palette has a color within ΔE 0.04 of #1279F0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.021
- Cerulean Blue #056EEE ΔE 0.029
- Royal Blue #4169E1 ΔE 0.046
- Bright Blue #0165FC ΔE 0.053
- Neon Blue #4361EE ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.063
- Azul #1D5DEC ΔE 0.067
- Dark Sky Blue #448EE4 ΔE 0.071
Use #1279F0 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.