#4B738D
Closest named color: Metallic Blue (#4F738E). oklch(53.6% 0.061 237.9), rgb(75, 115, 141).
Aa
White text reads best on this color (5.07:1).
About this color
#4B738D is a medium-dark, muted blue. In OKLCH its lightness is 54%, its chroma 0.061 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.005 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #4B738D |
| RGB | rgb(75, 115, 141) |
| HSL | hsl(204, 31%, 42%) |
| OKLCH | oklch(53.6% 0.061 237.9) |
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 #4B738D | 5.07:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #4B738D | 4.13:1 | AA large text | Lc 29.1 | Dividers and decoration only |
| #4B738D text on white | 5.07:1 | AA | Lc 75.0 | Content text, not long reading |
| #4B738D text on black | 4.13:1 | AA large text | Lc -26.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE2
oklch(88.5% 0.015 235.4)
-
Step 300
300
#B1C4D0
oklch(81% 0.027 235.4)
-
Step 400
400
#88A5B9
oklch(70.7% 0.044 238.4)
-
Step 500
500
#6A8FA8
oklch(63.2% 0.056 238.3)
-
Step 600
600 (this color)
#4B738D
oklch(53.6% 0.061 237.9)
-
Step 700
700
#41667D
oklch(49.2% 0.056 236.8)
-
Step 800
800
#365366
oklch(42.7% 0.047 238.1)
-
Step 900
900
#2F4553
oklch(37.8% 0.036 236.9)
-
Step 950
950
#1C2830
oklch(26.9% 0.022 237.9)
#4B738D 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) | #67728E | 0.036 |
| Deuteranopia (no green cones) | #5E6B8D | 0.031 |
| Tritanopia (no blue cones) | #2E7A7B | 0.049 |
| Achromatopsia (no color) | #6E6E6E | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B738D
#4B738D
oklch(53.6% 0.061 237.9)
- #89654A
#89654A
oklch(53.7% 0.061 57.9)
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 #4B738D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.005
- Dull Blue #49759C ΔE 0.023
- Cerulean #457B9D ΔE 0.029
- Stormy Blue #507B9C ΔE 0.031
- Muted Blue #3B719F ΔE 0.034
- Sea Blue #047495 ΔE 0.044
- Flat Blue #3C73A8 ΔE 0.044
- Ocean #017B92 ΔE 0.045
Use #4B738D 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.