#127AEE
Closest named color: Clear Blue (#247AFD). oklch(59.2% 0.195 256.2), rgb(18, 122, 238).
Aa
Black text reads best on this color (5.04:1).
About this color
#127AEE is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.195 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.024 away. Black text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #127AEE |
| RGB | rgb(18, 122, 238) |
| HSL | hsl(212, 87%, 50%) |
| OKLCH | oklch(59.2% 0.195 256.2) |
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 #127AEE | 4.16:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #127AEE | 5.04:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #127AEE text on white | 4.16:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #127AEE text on black | 5.04:1 | AA | Lc -33.7 | 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
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBFA
oklch(88.5% 0.049 256.9)
-
Step 300
300
#9CC3F9
oklch(80.9% 0.088 256.6)
-
Step 400
400
#63A2F6
oklch(70.7% 0.14 256.1)
-
Step 500
500
#3388F3
oklch(63.1% 0.18 256.2)
-
Step 600
600 (this color)
#127AEE
oklch(59.2% 0.195 256.2)
-
Step 700
700
#005DBD
oklch(49.1% 0.169 256.1)
-
Step 800
800
#004C9D
oklch(42.8% 0.147 256.2)
-
Step 900
900
#0C407E
oklch(37.7% 0.117 256.1)
-
Step 950
950
#0A264A
oklch(27% 0.075 256.3)
#127AEE 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) | #3186F2 | 0.037 |
| Deuteranopia (no green cones) | #0074EC | 0.017 |
| Tritanopia (no blue cones) | #0096A9 | 0.145 |
| Achromatopsia (no color) | #7C7C7C | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #127AEE
#127AEE
oklch(59.2% 0.195 256.2)
- #A77200
#A77200
oklch(59.2% 0.124 76.5)
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 #127AEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.024
- Cerulean Blue #056EEE ΔE 0.031
- Royal Blue #4169E1 ΔE 0.047
- Bright Blue #0165FC ΔE 0.057
- Neon Blue #4361EE ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.061
- Water Blue #0E87CC ΔE 0.067
- Dark Sky Blue #448EE4 ΔE 0.067
Use #127AEE 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.