#136DE1
Closest named color: Cerulean Blue (#056EEE). oklch(55.5% 0.194 258), rgb(19, 109, 225).
Aa
White text reads best on this color (4.88:1).
About this color
#136DE1 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.194 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.020 away. White text reads best on it, at 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.30:1 |
| White text | 4.88:1 |
Values
| HEX | #136DE1 |
| RGB | rgb(19, 109, 225) |
| HSL | hsl(214, 84%, 48%) |
| OKLCH | oklch(55.5% 0.194 258) |
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 #136DE1 | 4.88:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #136DE1 | 4.30:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #136DE1 text on white | 4.88:1 | AA | Lc 73.1 | Content text, not long reading |
| #136DE1 text on black | 4.30:1 | AA large text | Lc -28.6 | 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
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9EC3F9
oklch(81% 0.087 257.7)
-
Step 400
400
#67A1F6
oklch(70.6% 0.139 257.9)
-
Step 500
500
#3C87F3
oklch(63.2% 0.178 258)
-
Step 600
600 (this color)
#136DE1
oklch(55.5% 0.194 258)
-
Step 700
700
#025BC4
oklch(49.2% 0.18 257.9)
-
Step 800
800
#0A4B9E
oklch(42.8% 0.148 257.8)
-
Step 900
900
#133F7E
oklch(37.6% 0.117 258.2)
-
Step 950
950
#0D264A
oklch(27.1% 0.074 257.9)
#136DE1 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) | #157AE5 | 0.034 |
| Deuteranopia (no green cones) | #0069DF | 0.013 |
| Tritanopia (no blue cones) | #008A9C | 0.148 |
| Achromatopsia (no color) | #717171 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #136DE1
#136DE1
oklch(55.5% 0.194 258)
- #986900
#986900
oklch(55.6% 0.116 77.9)
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 #136DE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.020
- Royal Blue #4169E1 ΔE 0.029
- Azul #1D5DEC ΔE 0.042
- Neon Blue #4361EE ΔE 0.044
- Bright Blue #0165FC ΔE 0.046
- Clear Blue #247AFD ΔE 0.054
- Warm Blue #4B57DB ΔE 0.060
- Windows Blue #3778BF ΔE 0.067
Use #136DE1 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.