#136BD9
Closest named color: Cerulean Blue (#056EEE). oklch(54.5% 0.186 257.5), rgb(19, 107, 217).
Aa
White text reads best on this color (5.08:1).
About this color
#136BD9 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.186 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.032 away. White text reads best on it, at 5.08:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.13:1 |
| White text | 5.08:1 |
Values
| HEX | #136BD9 |
| RGB | rgb(19, 107, 217) |
| HSL | hsl(213, 84%, 46%) |
| OKLCH | oklch(54.5% 0.186 257.5) |
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 #136BD9 | 5.08:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #136BD9 | 4.13:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #136BD9 text on white | 5.08:1 | AA | Lc 74.4 | Content text, not long reading |
| #136BD9 text on black | 4.13:1 | AA large text | Lc -27.3 | Dividers and decoration only |
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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C6DBF8
oklch(88.5% 0.046 256.5)
-
Step 300
300
#9FC3F7
oklch(81% 0.084 257.5)
-
Step 400
400
#69A2F3
oklch(70.8% 0.134 257.3)
-
Step 500
500
#3E88EE
oklch(63.1% 0.17 257.2)
-
Step 600
600 (this color)
#136BD9
oklch(54.5% 0.186 257.5)
-
Step 700
700
#085CC0
oklch(49.2% 0.173 257.5)
-
Step 800
800
#0D4C9B
oklch(42.8% 0.142 257.3)
-
Step 900
900
#15407B
oklch(37.7% 0.111 257.5)
-
Step 950
950
#0E2648
oklch(27% 0.07 257.6)
#136BD9 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) | #1F77DD | 0.033 |
| Deuteranopia (no green cones) | #0066D7 | 0.015 |
| Tritanopia (no blue cones) | #008698 | 0.140 |
| Achromatopsia (no color) | #6E6E6E | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #136BD9
#136BD9
oklch(54.5% 0.186 257.5)
- #946600
#946600
oklch(54.5% 0.114 77.8)
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 #136BD9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.032
- Royal Blue #4169E1 ΔE 0.033
- Azul #1D5DEC ΔE 0.045
- Neon Blue #4361EE ΔE 0.050
- Bright Blue #0165FC ΔE 0.056
- Warm Blue #4B57DB ΔE 0.058
- Mid Blue #276AB3 ΔE 0.059
- Windows Blue #3778BF ΔE 0.062
Use #136BD9 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.