#3E708E
Closest named color: Metallic Blue (#4F738E). oklch(52.3% 0.072 236.7), rgb(62, 112, 142).
Aa
White text reads best on this color (5.36:1).
About this color
#3E708E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.072 and its hue 237°. 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 5.36:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #3E708E |
| RGB | rgb(62, 112, 142) |
| HSL | hsl(203, 39%, 40%) |
| OKLCH | oklch(52.3% 0.072 236.7) |
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 #3E708E | 5.36:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #3E708E | 3.91:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #3E708E text on white | 5.36:1 | AA | Lc 76.6 | Fine for body text |
| #3E708E 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
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ACC5D5
oklch(81% 0.035 236)
-
Step 400
400
#80A6BF
oklch(70.6% 0.055 237.4)
-
Step 500
500
#5E90AF
oklch(63% 0.071 236.7)
-
Step 600
600
#437A9B
oklch(55.6% 0.078 236.8)
-
Step 700
700 (this color)
#3E708E
oklch(52.3% 0.072 236.7)
-
Step 800
800
#2C546B
oklch(42.7% 0.059 235.7)
-
Step 900
900
#284557
oklch(37.6% 0.047 237.1)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#3E708E 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) | #626F8F | 0.043 |
| Deuteranopia (no green cones) | #57678E | 0.037 |
| Tritanopia (no blue cones) | #00787A | 0.057 |
| Achromatopsia (no color) | #6B6B6B | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E708E
#3E708E
oklch(52.3% 0.072 236.7)
- #8A5F3F
#8A5F3F
oklch(52.4% 0.073 57)
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 #3E708E, 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 0.027
- Dull Blue #49759C ΔE 0.028
- Sea Blue #047495 ΔE 0.031
- Ocean Blue #03719C ΔE 0.036
- Cerulean #457B9D ΔE 0.038
- Denim #3B638C ΔE 0.039
- Ocean #017B92 ΔE 0.040
Use #3E708E 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.