#136DE4
Closest named color: Cerulean Blue (#056EEE). oklch(55.7% 0.198 258.3), rgb(19, 109, 228).
Aa
White text reads best on this color (4.84:1).
About this color
#136DE4 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.198 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.015 away. White text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #136DE4 |
| RGB | rgb(19, 109, 228) |
| HSL | hsl(214, 85%, 48%) |
| OKLCH | oklch(55.7% 0.198 258.3) |
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 #136DE4 | 4.84:1 | AA | Lc -78.3 | Fine for body text |
| Black text on #136DE4 | 4.33:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #136DE4 text on white | 4.84:1 | AA | Lc 72.8 | Content text, not long reading |
| #136DE4 text on black | 4.33:1 | AA large text | Lc -28.8 | 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E0EBFC
oklch(93.7% 0.026 259)
-
Step 200
200
#C6DBFA
oklch(88.6% 0.048 258)
-
Step 300
300
#9DC3FA
oklch(81% 0.088 257.6)
-
Step 400
400
#67A1F8
oklch(70.7% 0.142 258.3)
-
Step 500
500
#3B86F5
oklch(63.1% 0.182 258.4)
-
Step 600
600 (this color)
#136DE4
oklch(55.7% 0.198 258.3)
-
Step 700
700
#015AC6
oklch(49.2% 0.184 258.3)
-
Step 800
800
#094AA0
oklch(42.7% 0.152 258.4)
-
Step 900
900
#123F7F
oklch(37.7% 0.119 258.2)
-
Step 950
950
#0C254A
oklch(26.8% 0.075 258.4)
#136DE4 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) | #0A7BE8 | 0.036 |
| Deuteranopia (no green cones) | #0069E2 | 0.012 |
| Tritanopia (no blue cones) | #008B9E | 0.150 |
| Achromatopsia (no color) | #727272 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #136DE4
#136DE4
oklch(55.7% 0.198 258.3)
- #986A00
#986A00
oklch(55.8% 0.116 78.7)
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 #136DE4, closest first.
No curated palette has a color within ΔE 0.04 of #136DE4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.015
- Royal Blue #4169E1 ΔE 0.029
- Azul #1D5DEC ΔE 0.040
- Neon Blue #4361EE ΔE 0.042
- Bright Blue #0165FC ΔE 0.042
- Clear Blue #247AFD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.060
- Windows Blue #3778BF ΔE 0.071
Use #136DE4 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.