#307D91
Closest named color: Ocean (#017B92). oklch(55.1% 0.08 218.1), rgb(48, 125, 145).
Aa
White text reads best on this color (4.70:1).
About this color
#307D91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.080 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.021 away. White text reads best on it, at 4.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.46:1 |
| White text | 4.70:1 |
Values
| HEX | #307D91 |
| RGB | rgb(48, 125, 145) |
| HSL | hsl(192, 50%, 38%) |
| OKLCH | oklch(55.1% 0.08 218.1) |
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 #307D91 | 4.70:1 | AA | Lc -77.8 | Fine for body text |
| Black text on #307D91 | 4.46:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #307D91 text on white | 4.70:1 | AA | Lc 72.4 | Content text, not long reading |
| #307D91 text on black | 4.46:1 | AA large text | Lc -29.3 | 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
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A8C7D0
oklch(81% 0.036 217.2)
-
Step 400
400
#77AAB9
oklch(70.7% 0.058 218.1)
-
Step 500
500
#5194A7
oklch(63% 0.074 218.4)
-
Step 600
600 (this color)
#307D91
oklch(55.1% 0.08 218.1)
-
Step 700
700
#236B7D
oklch(49.2% 0.075 217.8)
-
Step 800
800
#205765
oklch(42.7% 0.061 217.5)
-
Step 900
900
#204853
oklch(37.8% 0.049 218.2)
-
Step 950
950
#142A30
oklch(27% 0.03 217.4)
#307D91 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) | #707992 | 0.069 |
| Deuteranopia (no green cones) | #626F91 | 0.062 |
| Tritanopia (no blue cones) | #008483 | 0.040 |
| Achromatopsia (no color) | #747474 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #307D91
#307D91
oklch(55.1% 0.08 218.1)
- #9A614F
#9A614F
oklch(55.1% 0.08 38.3)
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 #307D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.021
- Cerulean #457B9D ΔE 0.029
- Teal Blue #01889F ΔE 0.034
- Stormy Blue #507B9C ΔE 0.036
- Metallic Blue #4F738E ΔE 0.037
- Sea Blue #047495 ΔE 0.038
- Deep Aqua #08787F ΔE 0.038
- Teal #008080 ΔE 0.038
Use #307D91 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.