#36819E
Closest named color: Cerulean (#457B9D). oklch(56.9% 0.086 226.8), rgb(54, 129, 158).
Aa
Black text reads best on this color (4.79:1).
About this color
#36819E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.086 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.020 away. Black text reads best on it, at 4.79:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.79:1 |
| White text | 4.38:1 |
Values
| HEX | #36819E |
| RGB | rgb(54, 129, 158) |
| HSL | hsl(197, 49%, 42%) |
| OKLCH | oklch(56.9% 0.086 226.8) |
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 #36819E | 4.38:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #36819E | 4.79:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #36819E text on white | 4.38:1 | AA large text | Lc 70.1 | Content text, not long reading |
| #36819E text on black | 4.79:1 | AA | Lc -31.5 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECF0
oklch(93.7% 0.011 226)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A7C6D4
oklch(80.8% 0.039 226.9)
-
Step 400
400
#77A9BF
oklch(70.7% 0.062 227.2)
-
Step 500
500
#5193AE
oklch(63% 0.079 226.7)
-
Step 600
600 (this color)
#36819E
oklch(56.9% 0.086 226.8)
-
Step 700
700
#236984
oklch(49% 0.08 227.8)
-
Step 800
800
#20566B
oklch(42.7% 0.066 227.2)
-
Step 900
900
#204757
oklch(37.7% 0.052 227.4)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#36819E 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) | #717F9F | 0.063 |
| Deuteranopia (no green cones) | #63749E | 0.056 |
| Tritanopia (no blue cones) | #00898A | 0.050 |
| Achromatopsia (no color) | #797979 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #36819E
#36819E
oklch(56.9% 0.086 226.8)
- #A1674A
#A1674A
oklch(57% 0.086 47.1)
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 #36819E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.020
- Teal Blue #01889F ΔE 0.026
- Stormy Blue #507B9C ΔE 0.027
- Blue NCS #118AB2 ΔE 0.035
- Dull Blue #49759C ΔE 0.036
- Ocean #017B92 ΔE 0.036
- Steel Blue #4682B4 ΔE 0.038
- Off Blue #5684AE ΔE 0.042
Use #36819E 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.