#4B7A99
Closest named color: Cerulean (#457B9D). oklch(55.9% 0.07 238.7), rgb(75, 122, 153).
Aa
White text reads best on this color (4.62:1).
About this color
#4B7A99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.070 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.008 away. White text reads best on it, at 4.62:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.54:1 |
| White text | 4.62:1 |
Values
| HEX | #4B7A99 |
| RGB | rgb(75, 122, 153) |
| HSL | hsl(204, 34%, 45%) |
| OKLCH | oklch(55.9% 0.07 238.7) |
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 #4B7A99 | 4.62:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #4B7A99 | 4.54:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #4B7A99 text on white | 4.62:1 | AA | Lc 72.0 | Content text, not long reading |
| #4B7A99 text on black | 4.54:1 | AA | Lc -29.7 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE4
oklch(88.5% 0.018 240)
-
Step 300
300
#AFC4D3
oklch(80.9% 0.031 238.9)
-
Step 400
400
#84A6BD
oklch(70.8% 0.05 238)
-
Step 500
500
#648FAD
oklch(63% 0.065 239.6)
-
Step 600
600 (this color)
#4B7A99
oklch(55.9% 0.07 238.7)
-
Step 700
700
#3B6682
oklch(49.1% 0.066 238.6)
-
Step 800
800
#31536A
oklch(42.6% 0.055 239.5)
-
Step 900
900
#2C4556
oklch(37.8% 0.042 239.1)
-
Step 950
950
#1A2832
oklch(26.9% 0.027 240.1)
#4B7A99 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) | #6C799B | 0.041 |
| Deuteranopia (no green cones) | #617198 | 0.034 |
| Tritanopia (no blue cones) | #238284 | 0.057 |
| Achromatopsia (no color) | #757575 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7A99
#4B7A99
oklch(55.9% 0.07 238.7)
- #936A49
#936A49
oklch(55.8% 0.071 59.5)
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 #4B7A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.008
- Stormy Blue #507B9C ΔE 0.008
- Dull Blue #49759C ΔE 0.017
- Metallic Blue #4F738E ΔE 0.023
- Grey Blue #647D8E ΔE 0.036
- Muted Blue #3B719F ΔE 0.036
- Flat Blue #3C73A8 ΔE 0.039
- Off Blue #5684AE ΔE 0.042
Use #4B7A99 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.