#007FBB
Closest named color: Nice Blue (#107AB0). oklch(56.9% 0.13 239.9), rgb(0, 127, 187).
Aa
Black text reads best on this color (4.75:1).
About this color
#007FBB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.130 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.020 away. Black text reads best on it, at 4.75:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.75:1 |
| White text | 4.41:1 |
Values
| HEX | #007FBB |
| RGB | rgb(0, 127, 187) |
| HSL | hsl(199, 100%, 37%) |
| OKLCH | oklch(56.9% 0.13 239.9) |
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 #007FBB | 4.41:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #007FBB | 4.75:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #007FBB text on white | 4.41:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #007FBB text on black | 4.75:1 | AA | Lc -31.7 | 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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF4
oklch(93.6% 0.017 236.7)
-
Step 200
200
#C7DDED
oklch(88.6% 0.032 239.4)
-
Step 300
300
#9FC6E3
oklch(80.8% 0.058 240.6)
-
Step 400
400
#67A8D5
oklch(70.6% 0.094 240.2)
-
Step 500
500
#3792CA
oklch(63.1% 0.119 239.9)
-
Step 600
600 (this color)
#007FBB
oklch(56.9% 0.13 239.9)
-
Step 700
700
#006799
oklch(49% 0.112 240)
-
Step 800
800
#00557F
oklch(42.8% 0.098 239.8)
-
Step 900
900
#0E4666
oklch(37.6% 0.078 239.7)
-
Step 950
950
#0B293C
oklch(26.9% 0.05 240.3)
#007FBB 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) | #6280BE | 0.066 |
| Deuteranopia (no green cones) | #4A71BA | 0.051 |
| Tritanopia (no blue cones) | #008E94 | 0.085 |
| Achromatopsia (no color) | #787878 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #007FBB
#007FBB
oklch(56.9% 0.13 239.9)
- #AD610B
#AD610B
oklch(56.8% 0.13 59.9)
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 #007FBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.020
- Windows Blue #3778BF ΔE 0.029
- Water Blue #0E87CC ΔE 0.032
- Steel Blue #4682B4 ΔE 0.038
- Blue NCS #118AB2 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.042
- Flat Blue #3C73A8 ΔE 0.043
- Cerulean #457B9D ΔE 0.053
Use #007FBB 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.