#4688CC
Closest named color: Water Blue (#0E87CC). oklch(61.4% 0.124 251.1), rgb(70, 136, 204).
Aa
Black text reads best on this color (5.65:1).
About this color
#4688CC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.124 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.030 away. Black text reads best on it, at 5.65:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.65:1 |
| White text | 3.71:1 |
Values
| HEX | #4688CC |
| RGB | rgb(70, 136, 204) |
| HSL | hsl(210, 57%, 54%) |
| OKLCH | oklch(61.4% 0.124 251.1) |
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 #4688CC | 3.71:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #4688CC | 5.65:1 | AA | Lc 39.6 | Non-text elements, placeholder text |
| #4688CC text on white | 3.71:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #4688CC text on black | 5.65:1 | AA | Lc -37.2 | 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
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#C9DBEF
oklch(88.4% 0.034 251)
-
Step 300
300
#A4C4E7
oklch(80.9% 0.061 250.9)
-
Step 400
400
#72A5DB
oklch(70.7% 0.096 250.7)
-
Step 500
500 (this color)
#4688CC
oklch(61.4% 0.124 251.1)
-
Step 600
600
#2B76BF
oklch(55.6% 0.135 251.2)
-
Step 700
700
#1D63A5
oklch(49.2% 0.125 251.1)
-
Step 800
800
#1B5185
oklch(42.7% 0.103 250.9)
-
Step 900
900
#1D436B
oklch(37.6% 0.081 251.9)
-
Step 950
950
#12283E
oklch(27.1% 0.05 250.2)
#4688CC 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) | #6A8CCF | 0.041 |
| Deuteranopia (no green cones) | #587FCB | 0.028 |
| Tritanopia (no blue cones) | #0098A1 | 0.096 |
| Achromatopsia (no color) | #858585 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4688CC
#4688CC
oklch(61.4% 0.124 251.1)
- #B2761A
#B2761A
oklch(61.4% 0.124 71.4)
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 #4688CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.030
- Cool Blue #4984B8 ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.037
- Faded Blue #658CBB ΔE 0.043
- Off Blue #5684AE ΔE 0.046
- Dusty Blue #5A86AD ΔE 0.049
- Windows Blue #3778BF ΔE 0.050
Use #4688CC 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.