#31839B
Closest named color: Teal Blue (#01889F). oklch(57.1% 0.086 220.8), rgb(49, 131, 155).
Aa
Black text reads best on this color (4.85:1).
About this color
#31839B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.086 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.020 away. Black text reads best on it, at 4.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #31839B |
| RGB | rgb(49, 131, 155) |
| HSL | hsl(194, 52%, 40%) |
| OKLCH | oklch(57.1% 0.086 220.8) |
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 #31839B | 4.32:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #31839B | 4.85:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #31839B text on white | 4.32:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #31839B text on black | 4.85:1 | AA | Lc -32.0 | 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE3
oklch(88.6% 0.021 219.7)
-
Step 300
300
#A6C7D2
oklch(80.9% 0.039 220)
-
Step 400
400
#75AABC
oklch(70.7% 0.062 221.2)
-
Step 500
500
#4D95AB
oklch(63.2% 0.079 220.2)
-
Step 600
600 (this color)
#31839B
oklch(57.1% 0.086 220.8)
-
Step 700
700
#1D6B80
oklch(49.1% 0.079 220.1)
-
Step 800
800
#1B5768
oklch(42.7% 0.066 220.5)
-
Step 900
900
#1E4855
oklch(37.8% 0.051 221)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#31839B 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) | #75809C | 0.071 |
| Deuteranopia (no green cones) | #66759B | 0.063 |
| Tritanopia (no blue cones) | #008B8B | 0.044 |
| Achromatopsia (no color) | #797979 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31839B
#31839B
oklch(57.1% 0.086 220.8)
- #A36650
#A36650
oklch(57.2% 0.086 40.6)
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 #31839B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.020
- Cerulean #457B9D ΔE 0.028
- Stormy Blue #507B9C ΔE 0.034
- Ocean #017B92 ΔE 0.035
- Blue NCS #118AB2 ΔE 0.036
- Dark Cyan #008B8B ΔE 0.044
- Dull Blue #49759C ΔE 0.044
- Steel Blue #4682B4 ΔE 0.046
Use #31839B 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.