#127AEB
Closest named color: Clear Blue (#247AFD). oklch(59% 0.191 255.7), rgb(18, 122, 235).
Aa
Black text reads best on this color (5.00:1).
About this color
#127AEB is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.191 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.029 away. Black text reads best on it, at 5.00:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.00:1 |
| White text | 4.19:1 |
Values
| HEX | #127AEB |
| RGB | rgb(18, 122, 235) |
| HSL | hsl(211, 86%, 50%) |
| OKLCH | oklch(59% 0.191 255.7) |
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 #127AEB | 4.19:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #127AEB | 5.00:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #127AEB text on white | 4.19:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #127AEB text on black | 5.00:1 | AA | Lc -33.5 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C5DBF9
oklch(88.5% 0.048 256.2)
-
Step 300
300
#9CC3F8
oklch(80.8% 0.086 256.2)
-
Step 400
400
#64A2F5
oklch(70.6% 0.138 256.2)
-
Step 500
500
#3488F1
oklch(63% 0.177 256)
-
Step 600
600 (this color)
#127AEB
oklch(59% 0.191 255.7)
-
Step 700
700
#005EBC
oklch(49.2% 0.166 255.7)
-
Step 800
800
#004C9B
oklch(42.6% 0.144 255.8)
-
Step 900
900
#0D407D
oklch(37.6% 0.116 256.1)
-
Step 950
950
#0A2649
oklch(26.9% 0.073 255.8)
#127AEB 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) | #3585EF | 0.036 |
| Deuteranopia (no green cones) | #0073E9 | 0.019 |
| Tritanopia (no blue cones) | #0096A7 | 0.144 |
| Achromatopsia (no color) | #7C7C7C | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #127AEB
#127AEB
oklch(59% 0.191 255.7)
- #A77100
#A77100
oklch(59% 0.124 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 #127AEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.029
- Cerulean Blue #056EEE ΔE 0.032
- Royal Blue #4169E1 ΔE 0.046
- Bright Blue #0165FC ΔE 0.059
- Neon Blue #4361EE ΔE 0.062
- Dodger Blue #1E90FF ΔE 0.063
- Water Blue #0E87CC ΔE 0.064
- Dark Sky Blue #448EE4 ΔE 0.066
Use #127AEB 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.