#307E98
Closest named color: Cerulean (#457B9D). oklch(55.6% 0.085 223.7), rgb(48, 126, 152).
Aa
White text reads best on this color (4.60:1).
About this color
#307E98 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.085 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.022 away. White text reads best on it, at 4.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.56:1 |
| White text | 4.60:1 |
Values
| HEX | #307E98 |
| RGB | rgb(48, 126, 152) |
| HSL | hsl(195, 52%, 39%) |
| OKLCH | oklch(55.6% 0.085 223.7) |
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 #307E98 | 4.60:1 | AA | Lc -77.2 | Fine for body text |
| Black text on #307E98 | 4.56:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #307E98 text on white | 4.60:1 | AA | Lc 71.7 | Content text, not long reading |
| #307E98 text on black | 4.56:1 | AA | Lc -30.0 | 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE4
oklch(88.6% 0.022 223)
-
Step 300
300
#A7C7D3
oklch(81% 0.038 222.5)
-
Step 400
400
#76A9BD
oklch(70.6% 0.061 224.4)
-
Step 500
500
#5094AC
oklch(63.1% 0.078 223.2)
-
Step 600
600 (this color)
#307E98
oklch(55.6% 0.085 223.7)
-
Step 700
700
#216A82
oklch(49.1% 0.079 224.1)
-
Step 800
800
#1E5769
oklch(42.8% 0.065 222.5)
-
Step 900
900
#1F4756
oklch(37.6% 0.052 225.3)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#307E98 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) | #6F7B99 | 0.066 |
| Deuteranopia (no green cones) | #617098 | 0.060 |
| Tritanopia (no blue cones) | #008686 | 0.047 |
| Achromatopsia (no color) | #757575 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #307E98
#307E98
oklch(55.6% 0.085 223.7)
- #9D634A
#9D634A
oklch(55.7% 0.084 43.9)
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 #307E98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.022
- Ocean #017B92 ΔE 0.024
- Teal Blue #01889F ΔE 0.030
- Stormy Blue #507B9C ΔE 0.030
- Dull Blue #49759C ΔE 0.034
- Metallic Blue #4F738E ΔE 0.038
- Sea Blue #047495 ΔE 0.038
- Muted Blue #3B719F ΔE 0.043
Use #307E98 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.