#4D88CB
Closest named color: Cool Blue (#4984B8). oklch(61.7% 0.12 252.9), rgb(77, 136, 203).
Aa
Black text reads best on this color (5.69:1).
About this color
#4D88CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.120 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.030 away. Black text reads best on it, at 5.69:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.69:1 |
| White text | 3.68:1 |
Values
| HEX | #4D88CB |
| RGB | rgb(77, 136, 203) |
| HSL | hsl(212, 55%, 55%) |
| OKLCH | oklch(61.7% 0.12 252.9) |
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 #4D88CB | 3.68:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #4D88CB | 5.69:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #4D88CB text on white | 3.68:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #4D88CB text on black | 5.69:1 | AA | Lc -37.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A6C4E6
oklch(81% 0.058 251.8)
-
Step 400
400
#76A4DA
oklch(70.7% 0.094 253)
-
Step 500
500 (this color)
#4D88CB
oklch(61.7% 0.12 252.9)
-
Step 600
600
#3475BD
oklch(55.6% 0.13 253.2)
-
Step 700
700
#2662A3
oklch(49.1% 0.121 253.1)
-
Step 800
800
#215084
oklch(42.6% 0.101 253.2)
-
Step 900
900
#21436A
oklch(37.7% 0.078 253.3)
-
Step 950
950
#14273E
oklch(26.9% 0.05 254.1)
#4D88CB 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) | #6B8CCE | 0.036 |
| Deuteranopia (no green cones) | #5A80CA | 0.024 |
| Tritanopia (no blue cones) | #0097A0 | 0.097 |
| Achromatopsia (no color) | #858585 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D88CB
#4D88CB
oklch(61.7% 0.12 252.9)
- #B07821
#B07821
oklch(61.6% 0.119 72.9)
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 #4D88CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.030
- Water Blue #0E87CC ΔE 0.036
- Steel Blue #4682B4 ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.038
- Faded Blue #658CBB ΔE 0.038
- Off Blue #5684AE ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.046
- Windows Blue #3778BF ΔE 0.053
Use #4D88CB 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.