#31778E
Closest named color: Ocean (#017B92). oklch(53.5% 0.078 222.9), rgb(49, 119, 142).
Aa
White text reads best on this color (5.04:1).
About this color
#31778E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.078 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.020 away. White text reads best on it, at 5.04:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.15:1 |
| White text | 5.04:1 |
Values
| HEX | #31778E |
| RGB | rgb(49, 119, 142) |
| HSL | hsl(195, 49%, 37%) |
| OKLCH | oklch(53.5% 0.078 222.9) |
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 #31778E | 5.04:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #31778E | 4.15:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #31778E text on white | 5.04:1 | AA | Lc 74.6 | Content text, not long reading |
| #31778E text on black | 4.15:1 | AA large text | Lc -27.1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A9C6D1
oklch(80.9% 0.035 222.7)
-
Step 400
400
#7AA9BA
oklch(70.7% 0.056 222.3)
-
Step 500
500
#5693A9
oklch(63% 0.071 223.3)
-
Step 600
600 (this color)
#31778E
oklch(53.5% 0.078 222.9)
-
Step 700
700
#296A7F
oklch(49.2% 0.073 222.7)
-
Step 800
800
#245667
oklch(42.7% 0.06 223.3)
-
Step 900
900
#234754
oklch(37.7% 0.047 223.8)
-
Step 950
950
#152A31
oklch(27.1% 0.03 221.5)
#31778E 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) | #6A748F | 0.063 |
| Deuteranopia (no green cones) | #5D6A8E | 0.057 |
| Tritanopia (no blue cones) | #007E7E | 0.043 |
| Achromatopsia (no color) | #6F6F6F | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31778E
#31778E
oklch(53.5% 0.078 222.9)
- #935E48
#935E48
oklch(53.5% 0.077 43.2)
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 #31778E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.020
- Sea Blue #047495 ΔE 0.026
- Metallic Blue #4F738E ΔE 0.029
- Cerulean #457B9D ΔE 0.032
- Deep Aqua #08787F ΔE 0.034
- Dull Blue #49759C ΔE 0.034
- Muted Blue #3B719F ΔE 0.038
- Ocean Blue #03719C ΔE 0.039
Use #31778E 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.