#3E708F
Closest named color: Metallic Blue (#4F738E). oklch(52.3% 0.073 237.6), rgb(62, 112, 143).
Aa
White text reads best on this color (5.35:1).
About this color
#3E708F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.073 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.022 away. White text reads best on it, at 5.35:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.91:1 |
| White text | 5.35:1 |
Values
| HEX | #3E708F |
| RGB | rgb(62, 112, 143) |
| HSL | hsl(203, 40%, 40%) |
| OKLCH | oklch(52.3% 0.073 237.6) |
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 #3E708F | 5.35:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #3E708F | 3.91:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #3E708F text on white | 5.35:1 | AA | Lc 76.5 | Fine for body text |
| #3E708F text on black | 3.91:1 | AA large text | Lc -25.2 | 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
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE5
oklch(88.5% 0.02 240.8)
-
Step 300
300
#ACC5D5
oklch(81% 0.035 236)
-
Step 400
400
#80A6C0
oklch(70.6% 0.056 238.5)
-
Step 500
500
#5E90B0
oklch(63% 0.072 237.6)
-
Step 600
600
#437A9C
oklch(55.6% 0.079 237.6)
-
Step 700
700 (this color)
#3E708F
oklch(52.3% 0.073 237.6)
-
Step 800
800
#2C546C
oklch(42.7% 0.06 236.8)
-
Step 900
900
#284558
oklch(37.6% 0.048 238.6)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#3E708F 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) | #626F90 | 0.043 |
| Deuteranopia (no green cones) | #57678E | 0.036 |
| Tritanopia (no blue cones) | #00787A | 0.058 |
| Achromatopsia (no color) | #6B6B6B | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E708F
#3E708F
oklch(52.3% 0.073 237.6)
- #8A5F3E
#8A5F3E
oklch(52.4% 0.073 57.8)
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 #3E708F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.022
- Muted Blue #3B719F ΔE 0.025
- Dull Blue #49759C ΔE 0.027
- Sea Blue #047495 ΔE 0.031
- Ocean Blue #03719C ΔE 0.035
- Cerulean #457B9D ΔE 0.037
- Flat Blue #3C73A8 ΔE 0.039
- Denim #3B638C ΔE 0.039
Use #3E708F 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.