#127DEE
Closest named color: Clear Blue (#247AFD). oklch(59.8% 0.192 255.3), rgb(18, 125, 238).
Aa
Black text reads best on this color (5.19:1).
About this color
#127DEE is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.192 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.025 away. Black text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.192) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.19:1 |
| White text | 4.04:1 |
Values
| HEX | #127DEE |
| RGB | rgb(18, 125, 238) |
| HSL | hsl(211, 87%, 50%) |
| OKLCH | oklch(59.8% 0.192 255.3) |
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 #127DEE | 4.04:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #127DEE | 5.19:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #127DEE text on white | 4.04:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #127DEE text on black | 5.19:1 | AA | Lc -34.7 | 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 500.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C3DBFC
oklch(88.4% 0.052 256.4)
-
Step 300
300
#98C4FD
oklch(81% 0.094 255.2)
-
Step 400
400
#5CA2FC
oklch(70.7% 0.15 255.5)
-
Step 500
500 (this color)
#127DEE
oklch(59.8% 0.192 255.3)
-
Step 600
600
#0070DC
oklch(55.6% 0.186 255.4)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900
#014082
oklch(37.8% 0.125 255.4)
-
Step 950
950
#06264C
oklch(27% 0.079 255.4)
#127DEE 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) | #3A88F2 | 0.038 |
| Deuteranopia (no green cones) | #0076EC | 0.019 |
| Tritanopia (no blue cones) | #0099AA | 0.144 |
| Achromatopsia (no color) | #7E7E7E | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #127DEE
#127DEE
oklch(59.8% 0.192 255.3)
- #AA7300
#AA7300
oklch(59.8% 0.126 75.7)
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 #127DEE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.025
- Cerulean Blue #056EEE ΔE 0.039
- Royal Blue #4169E1 ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.054
- Dark Sky Blue #448EE4 ΔE 0.060
- Water Blue #0E87CC ΔE 0.062
- Bright Blue #0165FC ΔE 0.064
- Neon Blue #4361EE ΔE 0.068
Use #127DEE 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.