#307B82
Closest named color: Deep Aqua (#08787F). oklch(54% 0.074 203.8), rgb(48, 123, 130).
Aa
White text reads best on this color (4.90:1).
About this color
#307B82 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.074 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.022 away. White text reads best on it, at 4.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #307B82 |
| RGB | rgb(48, 123, 130) |
| HSL | hsl(185, 46%, 35%) |
| OKLCH | oklch(54% 0.074 203.8) |
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 #307B82 | 4.90:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #307B82 | 4.28:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #307B82 text on white | 4.90:1 | AA | Lc 73.8 | Content text, not long reading |
| #307B82 text on black | 4.28:1 | 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
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CCDDDF
oklch(88.5% 0.018 205.3)
-
Step 300
300
#A9C7CA
oklch(80.8% 0.033 203.9)
-
Step 400
400
#79ABB0
oklch(70.8% 0.053 203.8)
-
Step 500
500
#54969C
oklch(63.2% 0.068 203.2)
-
Step 600
600 (this color)
#307B82
oklch(54% 0.074 203.8)
-
Step 700
700
#276C72
oklch(49.1% 0.068 203.2)
-
Step 800
800
#22585D
oklch(42.7% 0.057 203.6)
-
Step 900
900
#22494C
oklch(37.8% 0.044 202.1)
-
Step 950
950
#152B2D
oklch(27.2% 0.028 203.2)
#307B82 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) | #727683 | 0.074 |
| Deuteranopia (no green cones) | #656D82 | 0.067 |
| Tritanopia (no blue cones) | #00807D | 0.026 |
| Achromatopsia (no color) | #717171 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #307B82
#307B82
oklch(54% 0.074 203.8)
- #955D5A
#955D5A
oklch(53.9% 0.074 23.1)
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 #307B82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.022
- Teal #008080 ΔE 0.023
- Bluegreen #017A79 ΔE 0.026
- Ocean #017B92 ΔE 0.029
- Deep Turquoise #017374 ΔE 0.040
- Dark Aquamarine #017371 ΔE 0.042
- Metallic Blue #4F738E ΔE 0.045
- Sea Blue #047495 ΔE 0.046
Use #307B82 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.