#3D708B
Closest named color: Metallic Blue (#4F738E). oklch(52.1% 0.069 233.4), rgb(61, 112, 139).
Aa
White text reads best on this color (5.39:1).
About this color
#3D708B is a medium-dark, muted blue. In OKLCH its lightness is 52%, its chroma 0.069 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.023 away. White text reads best on it, at 5.39:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.88:1 |
| White text | 5.39:1 |
Values
| HEX | #3D708B |
| RGB | rgb(61, 112, 139) |
| HSL | hsl(201, 39%, 39%) |
| OKLCH | oklch(52.1% 0.069 233.4) |
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 #3D708B | 5.39:1 | AA | Lc -82.1 | Fine for body text |
| Black text on #3D708B | 3.88:1 | AA large text | Lc 27.3 | Dividers and decoration only |
| #3D708B text on white | 5.39:1 | AA | Lc 76.8 | Fine for body text |
| #3D708B text on black | 3.88:1 | AA large text | Lc -25.0 | 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 700.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE4
oklch(88.6% 0.019 232.5)
-
Step 300
300
#ACC5D3
oklch(80.9% 0.034 232.3)
-
Step 400
400
#80A7BD
oklch(70.8% 0.053 233.2)
-
Step 500
500
#5E91AD
oklch(63.1% 0.069 233.4)
-
Step 600
600
#437B98
oklch(55.7% 0.074 232.8)
-
Step 700
700 (this color)
#3D708B
oklch(52.1% 0.069 233.4)
-
Step 800
800
#2C546A
oklch(42.6% 0.058 234.5)
-
Step 900
900
#284656
oklch(37.8% 0.045 233)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#3D708B 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) | #636F8C | 0.046 |
| Deuteranopia (no green cones) | #58678B | 0.039 |
| Tritanopia (no blue cones) | #007779 | 0.053 |
| Achromatopsia (no color) | #6A6A6A | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D708B
#3D708B
oklch(52.1% 0.069 233.4)
- #895E42
#895E42
oklch(52.1% 0.07 53.7)
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 #3D708B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.023
- Sea Blue #047495 ΔE 0.031
- Muted Blue #3B719F ΔE 0.032
- Dull Blue #49759C ΔE 0.032
- Ocean Blue #03719C ΔE 0.038
- Ocean #017B92 ΔE 0.039
- Cerulean #457B9D ΔE 0.040
- Denim #3B638C ΔE 0.040
Use #3D708B 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.