#307F91
Closest named color: Ocean (#017B92). oklch(55.6% 0.08 215.6), rgb(48, 127, 145).
Aa
White text reads best on this color (4.59:1).
About this color
#307F91 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.080 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.024 away. White text reads best on it, at 4.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.57:1 |
| White text | 4.59:1 |
Values
| HEX | #307F91 |
| RGB | rgb(48, 127, 145) |
| HSL | hsl(191, 50%, 38%) |
| OKLCH | oklch(55.6% 0.08 215.6) |
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 #307F91 | 4.59:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #307F91 | 4.57:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #307F91 text on white | 4.59:1 | AA | Lc 71.7 | Content text, not long reading |
| #307F91 text on black | 4.57:1 | AA | Lc -30.0 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A7C7CF
oklch(80.9% 0.036 214.5)
-
Step 400
400
#76AAB7
oklch(70.6% 0.058 215)
-
Step 500
500
#5095A6
oklch(63.1% 0.074 215.7)
-
Step 600
600 (this color)
#307F91
oklch(55.6% 0.08 215.6)
-
Step 700
700
#216B7B
oklch(49% 0.075 215.2)
-
Step 800
800
#1E5764
oklch(42.6% 0.062 215.6)
-
Step 900
900
#1F4852
oklch(37.7% 0.049 216)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#307F91 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) | #737B92 | 0.072 |
| Deuteranopia (no green cones) | #657191 | 0.065 |
| Tritanopia (no blue cones) | #008685 | 0.037 |
| Achromatopsia (no color) | #757575 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #307F91
#307F91
oklch(55.6% 0.08 215.6)
- #9C6252
#9C6252
oklch(55.6% 0.08 36.2)
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 #307F91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.024
- Teal Blue #01889F ΔE 0.030
- Cerulean #457B9D ΔE 0.031
- Teal #008080 ΔE 0.036
- Stormy Blue #507B9C ΔE 0.038
- Deep Aqua #08787F ΔE 0.040
- Metallic Blue #4F738E ΔE 0.041
- Dark Cyan #008B8B ΔE 0.042
Use #307F91 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.