#307A8A
Closest named color: Ocean (#017B92). oklch(54% 0.076 214.4), rgb(48, 122, 138).
Aa
White text reads best on this color (4.91:1).
About this color
#307A8A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.076 and its hue 214°. 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 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #307A8A |
| RGB | rgb(48, 122, 138) |
| HSL | hsl(191, 48%, 36%) |
| OKLCH | oklch(54% 0.076 214.4) |
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 #307A8A | 4.91:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #307A8A | 4.27:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #307A8A text on white | 4.91:1 | AA | Lc 73.8 | Content text, not long reading |
| #307A8A text on black | 4.27:1 | AA large text | Lc -27.9 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEE
oklch(93.7% 0.01 212.5)
-
Step 200
200
#CCDDE1
oklch(88.6% 0.019 213.4)
-
Step 300
300
#A9C7CE
oklch(81% 0.034 213.4)
-
Step 400
400
#79AAB6
oklch(70.8% 0.055 214.6)
-
Step 500
500
#5495A4
oklch(63.2% 0.07 214.3)
-
Step 600
600 (this color)
#307A8A
oklch(54% 0.076 214.4)
-
Step 700
700
#276B79
oklch(49.1% 0.07 213.8)
-
Step 800
800
#225763
oklch(42.7% 0.059 215.1)
-
Step 900
900
#224851
oklch(37.8% 0.046 215.1)
-
Step 950
950
#152A2F
oklch(27% 0.028 214.7)
#307A8A 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) | #6E768B | 0.068 |
| Deuteranopia (no green cones) | #616C8A | 0.063 |
| Tritanopia (no blue cones) | #00807F | 0.035 |
| Achromatopsia (no color) | #717171 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #307A8A
#307A8A
oklch(54% 0.076 214.4)
- #965E51
#965E51
oklch(54% 0.077 33.8)
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 #307A8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.020
- Deep Aqua #08787F ΔE 0.028
- Teal #008080 ΔE 0.033
- Sea Blue #047495 ΔE 0.035
- Metallic Blue #4F738E ΔE 0.036
- Bluegreen #017A79 ΔE 0.036
- Cerulean #457B9D ΔE 0.037
- Dull Blue #49759C ΔE 0.043
Use #307A8A 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.